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Recognised as Colour

#3FBB66

  • #3FBB66
  • Green
  • Dark
  • Nearest: Medium seagreen

#3FBB66 is a green with RGB values 63, 187, 102 and HSL 139°, 50%, 49%. It is a dark colour, so black text on it reaches 8.5:1 contrast (AAA for normal text). The nearest named colour is Medium seagreen.

Colour values

#3FBB66#3FBB66
HEX#3FBB66
RGBrgb(63, 187, 102)
RGB (0–1)0.2471, 0.7333, 0.4
RGB percentages24.7%, 73.3%, 40%
HSLhsl(138.9, 49.6%, 49%)
HSV / HSBhsv(138.9, 66.3%, 73.3%)
CMYK66.3%, 0%, 45.5%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,176,742
CSS custom property--colour: #3FBB66;

Brightness & contrast

Relative luminance0.37557WCAG 2.x, 0 is black and 1 is white
Perceived brightness151.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.51:1
Contrast with white2.47:1WCAG normal text: Fail
Contrast with black8.51:1WCAG normal text: AAA
Greyscale equivalent#9B9B9B
Inverted#C04499

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#BCAB5Fno red cones; affects about 1% of men; ΔE 49.3 from the original
Deuteranopia#ADA16Cno green cones; the most common form, about 1% of men; ΔE 49.3 from the original
Tritanopia#02B8A7no blue cones; rare, and affects men and women equally; ΔE 37.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.47:1WCAG large text: Fail
Contrast with black, large text8.51:1WCAG large text: AAA

Named colours

Medium seagreen · ΔE 10.3Light green · ΔE 20.3Forest green · ΔE 21Pale green · ΔE 24.1Sea green · ΔE 24.6Medium spring green · ΔE 26.6
Nearest named CSS colourMedium seagreen (#3CB371)ΔE 10.31, a distinctly different colour
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BB3F94
Analogous#56BB3F, #3FBBA4
Triadic#663FBB, #BB663F
Split complementary#A43FBB, #BB3F56
Tetradic#3F56BB, #BB3F94, #BBA43F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D5F1DE
Lighter +30%#AFE4C0
Lighter +20%#89D7A1
Lighter +10%#63CA83
Darker −10%#329551
Darker −20%#256F3C
Darker −30%#184928
Darker −40%#0C2213
More saturated +25%#20DA5A
Less saturated −25%#5E9C72

Channel breakdown

R63
G187
B102
Red63 (24.7%)
Green187 (73.3%)
Blue102 (40%)
Hue138.87°
Saturation (HSL)49.6%
Lightness49.02%
Dominant channelGreen
Hex per channelR 3F · G BB · B 66

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Every value on this page was computed from “3fbb66” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.